Revolving steam-derrick



(No Model.) 4 Sheets-Sheet 1.

J. M MYLER. REVOLVING STEAM DERRICK. No. 308,780. Patented Dec. Z; 1884.

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(No Model.) 4 Sheets-Sheet 2. J. MoMYLER.

REVOLVING STEAM DERRICK.

Patented Dec. 2. 1884.

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REVOLVING STEAM DBRRIGK.- No. 308,780. Patented Dec. 2 1884.

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(No Model.) 4 Shets-Sheet 4. l J. MGMYLER.

REVOLVING STEAM DERRICK.

No. 308.780. Patented Dec. 2, 1884.

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Sierras Parana @FFifiid JOHN ldcMYLER, OF CLEVELAND, OHIO.

SPECIFICATION forming part of Letters Patent No. 308,780, dated December 2, 1884,

Application filed January 8, 1854. (No model.)

To CLZZ whom, it may concern:

Beit known that I, JOHN MOMYLER, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Revolving Steam -Derricks, and I do hereby declare the following to bea full, clear, and exact description of the invent-ion, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention l'tlillGS to improvements in revolving derricks; and it consists in certain features of construction and in combination of parts, hereinafter deseribedyand pointed out in the claims.

In the accompanying drawings, Figure l is a side elevation, Fig. 2 an end elevation, and Fig. 3 a plan view of my improved derrick. Fig. i is a side elevation showing the position of certain portions of the mechanism hereinafter described. Fig. 5 is a vertical section of the central flange and steadyingpin. Fig. 6 is a plan view of the bottom of the central flange. Fig. 7 is a plan view of the supportingframe of the derrick and the track on which it revolves, and also the bevelwheel by which it is made to revolve, and Fig. Sis an elevation of the parts shown in Fig. 7. Fig. 9 is an elevation showing the clutches and gearing for revolving the derrick, but with one clutch and pinion in section.

A represents a supporting-frame, preferably of metal, mounted on the wheels a and surmounted by the bevel-wheel B that is encircled by the track B that is preferably of steel. The spokes or arms of the wheel B are crowning, as shown in Fig. 8, and have for a common center the flange b that, as shown in Figs. 5 and 6, has a hollow pendent hub, 12, and ribs bracing the hub and flange. The said arms embrace, respectively, the ribs and butt against the hub, and with this position of the parts the flange b is well adapted to sustain aweight from above. The flange I) rests upon the flange b, and has a pendent hollow hub, If, that fits the bore of the huh I) and forms a center-pin that guides the structure above. The union of the two flanges is on curved lines, as shown in Fig. 5, the face of hoisting-bucket or other weight.

the lower flange being dishing, so as to hold oil for lubrication of these parts. The hollow hubs admit of passing a water-pipe" through them, for supplying the boiler, and as the axis of these hubs is the center of motion in the revolving platform the water-pipe may be secured in a swivel-joint below. A supporting and revolving frame, 0, is mounted on the wheels 0 that travel on the track B. This frame 0 is attached at the center to the flange b and is guided by the hub or center-pin I)", already described. The derrick, boiler, engine, and other working parts. of the machine are mounted on and attached to the revolving frame 0.

D represents the boiler, and E the engine; F the boom, and F the frame-work from which the upper end of the boom is supported, and has attached one or more sheaves, f, over which the ropes pass that control the boom and operate the hoisting bucket or other weights. The engine here shown is a singleacting engine, operating in the usual manner by a crank and wrist on the crank-shaft E. The shaft G is provided with the drum G, around which the rope passes that raises the This shaft is also provided with the gear g,engaging the pinion g on the shaft E.

J and J are beveled pinions, each engaging the beveled gear and each forms the female portion of a frict oil-clutch. (Moreclearly shown in Fig. 9.)

The gear K is attached to the inclined shaft k, that is provided at the lower end with the pinion k, engaging the gear B, by means of which the derrick is rotated. The male portions of the clutchesjj have a common hub' provided with an annular groove, and are operated by the forked lever L, to which is attached the rod L, connecting it to an arm on the rock-shaft Z, to which is attached the handlever Z. The parts j and j and the common hub are connected to the shaft by the feather t, engaging a groove in the hub. cient end-play between these parts of the device so that when midway of its throw it will not engage either of the female portions of the respective couplings, but may be made to engage either, as desired, and the gear K There is suffimay be revolved in either direction, causing also the derrick to turn in the direction required.

Heretofore a spur-wheel has usually been used in place of the bevel-gear B, and two or more shafts with the accompanying gearing was necessary to transmit power from the crankshaft. With my construction just described the machine is simplified and less expensive and more convenient.

1? and P are bevel-gears engaging the pinion R,attached to the shaft R, on which is the worm r engaging the worm-gear s. This wormgear is attached to the shaft 8, on which is secured the drum 8 around which is wound the rope that raises the boom, or a rope for moving the truck A on the rails. The wheels I and P are operated by an intermediate friction-clutch, of which they form a part, similar to the one operating in conjunction with the gears J and J, just described.

The levers operating the clutch are underneath and not shown, but lead to the handlever 1), by which they are actuated.

The different parts of the machine are all operated by frictiouclutches, and may be started or stopped while the engine is in full motion. A single engine is therefore capable of performing the work in asatisfactory manner. If, however, a double engine is preferred, another crank may be attached to the righthand end of the shaft E, and another engine added without any change in the working part-s already described.

It will be seen that the machine is simple, compact, and convenient, and easy to manipulate, and can perform all of the functions re quired ofa machineof'this class.

What I claim is- 1. In a revolving derrick, the combination, with a base having a bevel-gear thereon, and a frame mounted on said base and adapted to revolve thereon, of an inclined shaft secured to said revolving frame and provided with a pinion adapted to mesh with the bevel-gear on the base, substantially as set forth.

2. In a revolving derrick, the combination, with a truck having a bevel-gear thereon, and a frame pivoted to the truck and adapted to revolve thereon, of an inclined shaft secured to the frame, a pinion secured to said shaft and meshing with the bevel gear-wheel, and devices, substantially as described,for rotating said shaft.

3. In a revolving derrick, the combination, with a base having a bevel-wheel rigidly secured thereto, the arms or spokes of said wheel being set crowning, so as to sustain a heavy weight at the center of the arms, and a track encircling said bevel-wheel and supporting thesame againstthe outward thrust of the arms, of a frame pivotally secured to the base, an inclined shaft secured to said frame, and a pinion secured to the lower end of said inclined shaft and meshing with the bevel-wheel on the base, substantially as set forth.

4. In a revolving derrick, the combination, with a base having a bevel wheel secured thereto, and the flange 6, secured to the arms or hub of said bevel-wheel, of a frame having the flange b the latter provided with a depending hollow hub, and an inclined shaft secured to said frame and provided with a pinion for engaging the bevel-wheel on the face, the meeting faces of the said flanges being constructed substantially as shown.

In testimony whereof I sign this specification, in the presence of two witnesses, this 3d day of December, 1883.

JOHN MOMYLER.

Witnesses:

O. H. DORER, GEO. WV. KING. 

